/*
 * Copyright (c) 2016 Zibin Zheng <znbin@qq.com>
 * All rights reserved
 */

#ifndef _MULTI_BUTTON_H_
#define _MULTI_BUTTON_H_

#include <stdint.h>
#include <string.h>

// According to your need to modify the constants.
#define TICKS_INTERVAL 10  // ms
#define DEBOUNCE_TICKS 1   // MAX 7 (0 ~ 7)
#define SHORT_TICKS (100 / TICKS_INTERVAL)
#define LONG_TICKS (1000 / TICKS_INTERVAL)

typedef void (*BtnCallback)(void *);

typedef enum {
    PRESS_DOWN = 0,
    PRESS_UP,
    PRESS_REPEAT,
    SINGLE_CLICK,
    DOUBLE_CLICK,
    LONG_PRESS_START,
    LONG_PRESS_HOLD,
    number_of_event,
    NONE_PRESS
} PressEvent;

typedef struct Button {
    uint16_t ticks;
    uint8_t repeat : 4;
    uint8_t event : 4;
    uint8_t state : 3;
    uint8_t debounce_cnt : 3;
    uint8_t active_level : 1;
    uint8_t button_level : 1;
    uint8_t button_id;
    uint8_t (*hal_button_Level)(uint8_t button_id_);
    BtnCallback cb[number_of_event];
    struct Button *next;
} Button;

#ifdef __cplusplus
extern "C" {
#endif

void button_init(struct Button *handle, uint8_t (*pin_level)(uint8_t), uint8_t active_level,
                 uint8_t button_id);
void button_attach(struct Button *handle, PressEvent event, BtnCallback cb);
PressEvent get_button_event(struct Button *handle);
int button_start(struct Button *handle);
void button_stop(struct Button *handle);
void button_ticks(void);

#ifdef __cplusplus
}
#endif

#endif
